author | trims |
Thu, 27 May 2010 19:08:38 -0700 | |
changeset 5547 | f4b087cbb361 |
parent 1 | 489c9b5090e2 |
child 7397 | 5b173b4ca846 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997, 2000, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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* |
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*/ |
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// Data structure for holding monitors for one activation during |
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// deoptimization. |
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class MonitorChunk: public CHeapObj { |
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private: |
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int _number_of_monitors; |
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BasicObjectLock* _monitors; |
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BasicObjectLock* monitors() const { return _monitors; } |
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MonitorChunk* _next; |
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public: |
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// Constructor |
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MonitorChunk(int number_on_monitors); |
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~MonitorChunk(); |
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// link operations |
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MonitorChunk* next() const { return _next; } |
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void set_next(MonitorChunk* next) { _next = next; } |
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// Tells whether the monitor chunk is linked into the JavaThread |
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bool is_linked() const { return next() != NULL; } |
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// Returns the number of monitors |
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int number_of_monitors() const { return _number_of_monitors; } |
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// Returns the index'th monitor |
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BasicObjectLock* at(int index) { assert(index >= 0 && index < number_of_monitors(), "out of bounds check"); return &monitors()[index]; } |
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// Memory management |
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void oops_do(OopClosure* f); |
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// Tells whether the addr point into the monitors. |
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bool contains(void* addr) const { return (addr >= (void*) monitors()) && (addr < (void*) (monitors() + number_of_monitors())); } |
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}; |